Petalichthyida
瓣甲鱼目
🗣️ 情景例句
Maybe it needs cutting.
也许真需要削减呢。
Do you usually learn French after school?
你通常在放学后学法文吗？
he realizes its volume, as the space that the shape displaces in the air.
他能意识到物体的体积，那就是它的形状在空气中所占的空间。